THE LIVING WORLD-NEET-PRACTICE QUESTIONS
26. Maltose, lactose and soucrose are
A) Disaccharides
B) Trisaccharides
C) Monosaccharides
D) Polysaccharides
Correct Answer: A
27. Glycogen is most structurally similar to
A) Glucose
B) Starch
C) Maltose
D) Cellulose
Correct Answer: B
28. Which of the following is produced only by plants
A) Starch
B) Glycogen
C) Cholesterol
D) Triglycerides
Correct Answer: A
29. Chitin is found in
A) Mollusca
B) Coelenterata
C) Arthropoda
D) Echinodermata
Correct Answer: C
30. Chitin is a structural polysaccharide and is polymerised form
A) Glucose
B) Ribose
C) Deoxyribose
D) None of these
Correct Answer: D
31. Which one of the following is an example of glycoprotein
A) Mucin
B) Lecithin
C) Casein
D) Haemoglobin
Correct Answer: A
32. Among the energy values or nutrients, 9.3 calories is that of
A) Fats
B) Proteins
C) Vitamins
D) Carbohydrates
Correct Answer: A
33. Lipids are generally
A) A high energy source
B) Hydrophobic
C) Composed of fatty acids
D) All of the above
Correct Answer: D
34. Predominant form of lipid present in bio membranes
A) Free fatty acids
B) Cholesterol
C) Triacylglycerols
D) Phospholipids
Correct Answer: D
35. The basis of life is
A) Lipid
B) Protein
C) Nucleic acid
D) Nucleoprotein
Correct Answer: C
36. Nucleoside is
A) Sugar + base
B) Phosphoric acid + base
C) Polymer of nucleic acid
D) Phosphoric acid + sugar + base
Correct Answer: A
37. Nucleotides are
A) Building blocks of DNA
B) Source of immediate energy
C) Readily present in cell membrane
D) Small enclosures inside the nucleus
Correct Answer: A
A) RNA subunits
B) ATP
C) DNA subunits
D) All of the above
Correct Answer: D
39. RNA differs from DNA in having
A) Uracil
B) Adenine
C) Cytosine
D) Thymine
Correct Answer: A
40. Energy is utilized by cells for
A) Reproduction
B) Growth
C) Biochemical activities
D) All of these
Correct Answer: D
41. Which of the cellular activities require energy
A) Growth
B) Muscle contraction
C) Active transport
D) All of these
Correct Answer: D
A) Open system
B) Closed system
C) Isolated system
D) All of these
Correct Answer: A
43. The process in which excess energy is lost by light waves is called
A) Photolysis
B) Fluorescence
C) Photo-oxidation
D) Photophosphorylation
Correct Answer: C
ΔG (cal/mole)
A) ? 4600
B) ? 326,000
C) ? 686,000
D) ? 2,338,000
Correct Answer: B
45. In the organisms which show bioluminescence, the chemical energy of cell is converted into
A) Light energy
B) Thermal energy
C) Radiant energy
D) Mechanical energy
Correct Answer: A
46. The energy transformation in the nervous system is
A) Chemical to radiant
B) Chemical to electrical
C) Chemical to mechanical
D) Mechanical to radiant
Correct Answer: B
47. The total solar energy converted to biomass on earth amounts
A) 2%
B) 0.2%
C) 0.02%
D) 20%
Correct Answer: B
48. A coconut high in a palm tree has........owing to its location
A) Free energy
B) Kinetic energy
C) Activation energy
D) Potential energy
Correct Answer: D
49. The amount of usable energy that is available for doing work in a system is
A) Mechanical energy
B) Free energy
C) Spontaneous energy
D) Light energy
Correct Answer: B
50. The total heat content of as system is
A) Entropy
B) Free energy
C) Enthalpy
D) Kinetic energy
Correct Answer: C
51. According to the first law of thermodynamics, the total amount of energy in the universe
A) Is constant
B) Varies up and down
C) Is always increasing
D) Is always decreasing
Correct Answer: A
52. What is predicted by the second law of thermodynamics
A) Energy is always decreasing
B) Disorder cannot be created or destroyed
C) All potential energy exists as chemical energy
D) Systems always tend toward greater states of disorder
Correct Answer: D
A) Digestion of food
B) Elimination of wastes
C) Exchange of gases
D) Various energy exchanges in cell
Correct Answer: A
54. All the synthesis reactions in the body form a division of metabolism called
A) Anabolism
B) Catabolism
C) Chemical reaction
D) None of these
Correct Answer: A
55. Anabolism is
A) Endergonic process
B) Exergonic process
C) Bidirectional process
D) Destructive process
Correct Answer: A
56. In ATP, the high energy bond is the one which links
A) Adenine with ribose
B) Ribose with phosphate
C) Adenine with phosphate
D) Phosphate to phosphate
Correct Answer: D
57. High energy phosphate bond is present in
A) ADP
B) Adenosine
C) AMP
D) Cyclic AMP
Correct Answer: A
A) Entropy
B) Steady state
C) Enthalpy
D) Homeostasis
Correct Answer: D
59. Plants differ from animals in having
A) Definite lifespan
B) Localized growth
C) Indefinite lifespan
D) Localized growth and indefinite lifespan
Correct Answer: B
60. Which of the following is a unifying concept of biology
A) Diversity
B) Circulation
C) Movement
D) Evolution
Correct Answer: D
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